66652774 has 16 divisors (see below), whose sum is σ = 102312000. Its totient is φ = 32557824.

The previous prime is 66652771. The next prime is 66652777. The reversal of 66652774 is 47725666.

It is an interprime number because it is at equal distance from previous prime (66652771) and next prime (66652777).

It is a super-3 number, since 3×66652774³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66652774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66652771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13152 + ... + 17500.

It is an arithmetic number, because the mean of its divisors is an integer number (6394500).

Almost surely, 2^66652774 is an apocalyptic number.

66652774 is a deficient number, since it is larger than the sum of its proper divisors (35659226).

66652774 is a wasteful number, since it uses less digits than its factorization.

66652774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4527.

The product of its digits is 423360, while the sum is 43.

The square root of 66652774 is about 8164.1150163383. The cubic root of 66652774 is about 405.4519650799.

The spelling of 66652774 in words is "sixty-six million, six hundred fifty-two thousand, seven hundred seventy-four".